ORCID Profile
0000-0002-8041-0389
Current Organisation
Queensland University of Technology
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Chemical and thermal processes in energy and combustion | Waste management reduction reuse and recycling | Industrial Chemistry | Industrial Biotechnology | Chemical engineering | Composite and Hybrid Materials | Bioprocessing, Bioproduction and Bioproducts | Chemical engineering design
ANZSRC Socio-Economic Objective (SEO)
Polymeric Materials (e.g. Paints) | Processed Non-Food Agricultural Products (excl. Wood, Paper and Fibre) not elsewhere classified |
Related Links
Publications
A multi-criteria analysis approach for ranking and selection of microorganisms for the production of oils for biodiesel production
Publisher: Elsevier BV
Date: 08-2015
DOI: 10.1016/J.BIORTECH.2015.04.083
Abstract: Oleaginous microorganisms have potential to be used to produce oils as alternative feedstock for biodiesel production. Microalgae (Chlorella protothecoides and Chlorella zofingiensis), yeasts (Cryptococcus albidus and Rhodotorula mucilaginosa), and fungi (Aspergillus oryzae and Mucor plumbeus) were investigated for their ability to produce oil from glucose, xylose and glycerol. Multi-criteria analysis (MCA) using analytic hierarchy process (AHP) and preference ranking organization method for the enrichment of evaluations (PROMETHEE) with graphical analysis for interactive aid (GAIA), was used to rank and select the preferred microorganisms for oil production for biodiesel application. This was based on a number of criteria viz., oil concentration, content, production rate and yield, substrate consumption rate, fatty acids composition, biomass harvesting and nutrient costs. PROMETHEE selected A. oryzae, M. plumbeus and R. mucilaginosa as the most prospective species for oil production. However, further analysis by GAIA Webs identified A. oryzae and M. plumbeus as the best performing microorganisms.
Effects of pretreatment methods on biomethane production kinetics and microbial community by solid state anaerobic digestion of sugarcane trash
Publisher: Elsevier BV
Date: 05-2022
DOI: 10.1016/J.BIORTECH.2022.127112
Abstract: Solid state anaerobic digestion (SS-AD) of lignocellulose is effective in improving biomethane productivity but is limited by low biomass digestibility and lack of substrate-specific working microorganisms. In this study, the effects of different pretreatment methods on biomethane production by SS-AD of sugarcane trash were studied. The biomethane production, fitted to a modified Gompertz's model, predicted a maximum methane yield of 214.2 L/kg volatile solids (VS) and productivity of 6.9 L/kg VS/day from KOH-pretreated trash, respectively. Microbial community analysis showed that bacterial community was significantly associated with volatile acids and pretreatment types while archaeal community was significantly associated with methane yield. Microbial community dynamics was revealed in SS-AD. Main genera related to pretreatment method were identified and discussed. This study generated important information on SS-AD of lignocellulosic biomass pretreated by different methods, which is useful for developing bioaugmentation strategies to improve biomethane production by SS-AD.
Assessing dilute acid pretreatment of different lignocellulosic biomasses for enhanced sugar production
Publisher: Springer Science and Business Media LLC
Date: 20-08-2016
Separation and characterisation of glyceryl glycosides and lignin from acid-catalysed glycerol pretreatment hydrolysate of sugarcane bagasse
Publisher: Elsevier BV
Date: 10-2023
Production of fungal biomass protein using microfungi from winery wastewater treatment
Publisher: Elsevier BV
Date: 06-2008
DOI: 10.1016/J.BIORTECH.2006.10.047
Abstract: This study was carried out to investigate the production of fungal biomass protein (FBP) in treatment of winery wastewater using microfungi. Three fungal strains, Trichoderma viride WEBL0702, Aspergillus niger WEBL0901 and Aspergillus oryzae WEBL0401, were selected in terms of microbial capability for FBP production and COD reduction. T. viride appeared to be the best strain for FBP production due to high productivity and less nitrogen requirement. More than 5 g/L of fungal biomass was produced in shake fermentation using T. viride without nitrogen addition, and by A. oryzae and A. niger with addition of 0.5-1.0 g/L (NH4)2SO4. The FBP production process corresponded to 84-90% COD reduction of winery wastewater. Fungal biomass contained approximately 36% protein produced by two Aspergillus strains, while biomass produced by T. viride consisted of 19.8% protein. Kinetic study indicated that maximum fungal cell growth could be achieved in 24h for T. viride and 48 h for A. oryzae and A. niger. Current results indicated that it could be feasible to develop a biotechnological treatment process integrated with FBP production from the winery waste streams.
Tailored production of citric acid and mannitol by Yarrowia lipolytica from corn stover pretreated by glycerol-assisted instant catapult steam explosion
Publisher: Elsevier BV
Date: 12-2022
Effect of pretreatment on saccharification of sugarcane bagasse by complex and simple enzyme mixtures
Publisher: Elsevier BV
Date: 11-2013
DOI: 10.1016/J.BIORTECH.2013.08.099
Abstract: Saccharification of sugarcane bagasse pretreated at the pilot-scale with different processes (in combination with steam-explosion) was evaluated. Maximum glucan conversion with Celluclast 1.5L (15-25FPU/g glucan) was in the following order: glycerol/HCl>HCl>H2SO4>NaOH, with the glycerol system achieving ≈ 100% conversion. Surprisingly, the NaOH substrate achieved optimum saccharification with only 8 FPU/g glucan. Glucan conversions (3.6-6%) obtained with mixtures of endo-1,4-β-glucanase (EG) and β-glucosidase (βG) for the NaOH substrate were 2-6 times that of acid substrates. However, glucan conversions (15-60%) obtained with mixtures of cellobiohydrolase (CBH I) and βG on acidified glycerol substrate were 10-30% higher than those obtained for NaOH and acid substrates. The susceptibility of the substrates to enzymatic saccharification was explained by their physical and chemical attributes. Acidified glycerol pretreatment offers the opportunity to simplify the complexity of enzyme mixtures required for saccharification of lignocellulosics.
Effects of lignocellulosic biomass type on the economics of hydrothermal treatment of digested sludge for solid fuel and soil amendment applications
Publisher: Elsevier BV
Date: 02-2023
DOI: 10.1016/J.WASMAN.2022.11.020
Abstract: Digested sludge is a waste stream from anaerobic digestion (AD) in wastewater treatment plants. Hydrothermal treatment (HTT) of sludge mixed with lignocellulosic biomass is an attractive approach to improve sludge dewaterability and generate value-added products. However, process economics has not been well understood. In this study, firstly, the effect of biomass type on the energy properties of hydrochars was studied. Secondly, two scenarios were simulated to evaluate the effects of biomass type on the economics (processing 50,000 tonnes of sludge per year) of HTT of digested sludge for solid fuel and soil amendment applications. The two HTT scenarios included sludge alone and sludge-biomass mixtures (four cases for four biomass feedstocks) at 180 °C for 60 min. In both scenarios, HTT liquids were returned to existing AD facilities for biomethane production to offset the energy cost of the HTT process. The results showed that the higher heating value significantly increased from 16.0-17.0 MJ kg
Production of lactic acid from renewable materials by Rhizopus fungi
Publisher: Elsevier BV
Date: 08-2007
Scale-up of two-step acid-catalysed glycerol pretreatment for production of oleaginous yeast biomass from sugarcane bagasse by Rhodosporidium toruloides
Publisher: Elsevier BV
Date: 10-2020
Liquid metal incorporated graphene oxide films with enhanced through-plane thermal conductivity and flame resistance
Publisher: Elsevier BV
Date: 12-2022
Bioprocessing of tea oil fruit hull with acetic acid organosolv pretreatment in combination with alkaline H2O2
Publisher: Springer Science and Business Media LLC
Date: 08-04-2017
Effects of cultivation parameters on the morphology of Rhizopus arrhizus and the lactic acid production in a bubble column reactor
Publisher: Wiley
Date: 10-2007
Highly Efficient Production of Transfructosylating Enzymes Using Low-Cost Sugarcane Molasses by A. Pullulans FRR 5284
Publisher: Research Square Platform LLC
Date: 04-2021
DOI: 10.21203/RS.3.RS-375469/V1
Abstract: In this study, sugarcane molasses was used to produce transfructosylating enzymes by A. pullulans FRR 5284. It was found that NaNO 3 was a better nitrogen source than yeast extract while exogeneous phosphorous was not needed. Adding only 4.4 g/L NaNO 3 into the molasses medium containing 100 g/L sugars led to the highest total transfructosylating activity of 123.8 U/mL. Scale-up of the enzyme production process from shake flasks to 1 L reactor improved the enzyme activity and productivity to 171.7 U/mL and 3.58 U/mL/h, 39% and 108% higher than the corresponding activity and productivity from shake flasks, respectively. FOS production from 500 g/L sucrose led to the highest yields of ~ 61% using intracellular, extracellular, and total enzymes from shake flasks and the reactor. Enzymes from different sources led to very different FOS profiles, indicating that FOS profiles can be controlled by adjusting intracellular and extracellular enzyme ratios to adjust prebiotic activity.
Chitosan-coated nanoliposomes for efficient delivery of betanin with enhanced stability and bioavailability
Publisher: Elsevier BV
Date: 11-2022
Effect of detoxification methods on ABE production from corn stover hydrolysate by Clostridium acetobutylicum CICC 8016
Publisher: Wiley
Date: 18-02-2020
DOI: 10.1002/BAB.1881
Abstract: In this study, effects of different single biomass derived inhibitors on acetone-butanol-ethanol (ABE) production by Clostridium acetobutylicum CICC 8016 were first investigated. The results showed that formic acid, coumaric acid, and furfural at 0.5 g/L (sodium formate equivalent) inhibited ABE production. Furthermore, corn stover hydrolysate media were prepared following dilute acid pretreatment, enzymatic hydrolysis, and detoxification with different methods. Among overliming, steam stripping, acetone-ethyl ether extraction, and ion exchange with five anion resins, adsorption with resin D301 showed the highest efficiency for inhibitor removal (99-100% of phenolics and 87-99% of sugar degradation products). Without detoxification, ABE production was lower than 1.0 g/L from 28.1 g/L sugars whereas ABE production with medium detoxified by D301 resin achieved higher ABE concentrations and yields than control with synthetic medium. Correlation analysis further revealed that formic acid, coumaric acid, and total phenolics were the major compounds inhibiting ABE production. The results also showed that the single detoxification method was sufficient to detoxify the hydrolysate for ABE production at the pretreatment conditions used in this study.
Production of lactic acid and byproducts from waste potato starch by Rhizopus arrhizus: Role of nitrogen sources
Publisher: Springer Science and Business Media LLC
Date: 02-08-2007
A novel population balance model for the dilute acid hydrolysis of hemicellulose
Publisher: Springer Science and Business Media LLC
Date: 19-02-2015
Triple action of FeCl3-assisted hydrothermal treatment of digested sludge for deep dewatering
Publisher: Elsevier BV
Date: 11-2022
DOI: 10.1016/J.SCITOTENV.2022.157727
Abstract: In this study, a FeCl
The prospect of microbial oil production and applications from oil palm biomass
Publisher: Elsevier BV
Date: 03-2019
Removal of heavy metals from water using engineered hydrochar: Kinetics and mechanistic approach
Publisher: Elsevier BV
Date: 04-2021
Structural characteristics of corncob and eucalyptus contributed to sugar release during hydrothermal pretreatment and enzymatic hydrolysis
Publisher: Springer Science and Business Media LLC
Date: 08-09-2017
The combination of plant-expressed cellobiohydrolase and low dosages of cellulases for the hydrolysis of sugar cane bagasse
Publisher: Springer Science and Business Media LLC
Date: 09-09-2014
Transformation of sugarcane molasses into fructooligosaccharides with enhanced prebiotic activity using whole-cell biocatalysts from Aureobasidium pullulans FRR 5284 and an invertase-deficient Saccharomyces cerevisiae 1403-7A
Publisher: Springer Science and Business Media LLC
Date: 03-09-2021
DOI: 10.1186/S40643-021-00438-7
Abstract: Fructooligosaccharides (FOS) can be used as feed prebiotics, but are limited by high production costs. In this study, low-cost sugarcane molasses was used to produce whole-cell biocatalysts containing transfructosylating enzymes by Aureobasidium pullulans FRR 5284, followed by FOS production from molasses using the whole-cells of A. pullulans . A. pullulans in molasses-based medium produced cells and broth with a total transfructosylating activity of 123.6 U/mL compared to 61.0 and 85.8 U/mL in synthetic molasses-based and sucrose-based media, respectively. It was found that inclusion of glucose in sucrose medium reduced both transfructosylating and hydrolytic activities of the produced cells and broth. With the use of pure glucose medium, cells and broth had very low levels of transfructosylating activities and hydrolytic activities were not detected. These results indicated that A. pullulans FRR 5284 produced both constitutive and inducible enzymes in sucrose-rich media, such as molasses while it only produced constitutive enzymes in the glucose media. Furthermore, treatment of FOS solutions generated from sucrose-rich solutions using an invertase-deficient Saccharomyces yeast converted glucose to ethanol and acetic acid and improved FOS content in total sugars by 20–30%. Treated FOS derived from molasses improved the in vitro growth of nine probiotic strains by 9–63% compared to a commercial FOS in 12 h incubation. This study demonstrated the potential of using molasses to produce FOS for feed application.
Optimization of on‐site cellulase preparation for efficient hydrolysis of atmospheric glycerol organosolv pretreated wheat straw
Publisher: Wiley
Date: 25-03-2018
DOI: 10.1002/JCTB.5605
Turbo thin film continuous flow production of biodiesel from fungal biomass
Publisher: Elsevier BV
Date: 02-2019
DOI: 10.1016/J.BIORTECH.2018.11.015
Abstract: Direct biodiesel production from wet fungal biomass may significantly reduce production costs, but there is a lack of fast and cost-effective processing technology. A novel thin film continuous flow process has been applied to study the effects of its operational parameters on fatty acid (FA) extraction and FA to fatty acid methyl ester (FAME) conversion efficiencies. Single factor experiments evaluated the effects of catalyst concentration and water content of biomass, while factorial experimental designs determined the interactions between catalyst concentration and biomass to methanol ratio, flow rate, and rotational speed. Direct transesterification (DT) of wet Mucor plumbeus biomass at ambient temperature and pressure achieved a FA to FAME conversion efficiency of >90% using 3 wt/v % NaOH concentration, if the water content was ≤50% (w/w). In comparison to existing DT methods, this continuous flow processing technology has an estimated 90-94% reduction in energy consumption, showing promise for up-scaling.
Low temperature pretreatment of sugarcane bagasse at atmospheric pressure using mixtures of ethylene carbonate and ethylene glycol
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C2GC36323B
Biofuels from food processing wastes
Publisher: Elsevier BV
Date: 04-2016
DOI: 10.1016/J.COPBIO.2016.01.010
Abstract: Food processing industry generates substantial high organic wastes along with high energy uses. The recovery of food processing wastes as renewable energy sources represents a sustainable option for the substitution of fossil energy, contributing to the transition of food sector towards a low-carbon economy. This article reviews the latest research progress on biofuel production using food processing wastes. While extensive work on laboratory and pilot-scale biosystems for energy production has been reported, this work presents a review of advances in metabolic pathways, key technical issues and bioengineering outcomes in biofuel production from food processing wastes. Research challenges and further prospects associated with the knowledge advances and technology development of biofuel production are discussed.
A systematic evaluation of biomethane production from sugarcane trash pretreated by different methods
Publisher: Elsevier BV
Date: 2021
Biorefining fractionation of the Camellia oleifera Abel. hull into diverse bioproducts with a two-stage organosolv extraction
Publisher: Elsevier BV
Date: 12-2016
Effect of pretreatment on the formation of 5-chloromethyl furfural derived from sugarcane bagasse
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5RA20203E
Abstract: The highest CMF yield (81.9%) was achieved with acidic ionic liquid pretreated bagasse, which had a glucan content of 81.6%.
Comparative study on adsorption of two cationic dyes by milled sugarcane bagasse
Publisher: Elsevier BV
Date: 03-2013
Integration of Salt-Induced Phase Separation with Organosolv Pretreatment for Clean Fractionation of Lignocellulosic Biomass
Publisher: American Chemical Society (ACS)
Date: 24-05-2017
Effect of ferrous iron loading on dewaterability, heavy metal removal and bacterial community of digested sludge by Acidithiobacillus ferrooxidans
Publisher: Elsevier BV
Date: 10-2021
Degradation of Hydroxycinnamic Acid Mixtures in Aqueous Sucrose Solutions by the Fenton Process
Publisher: American Chemical Society (ACS)
Date: 29-01-2015
DOI: 10.1021/JF504184U
Abstract: The degradation efficiencies and behaviors of caffeic acid (CaA), p-coumaric acid (pCoA), and ferulic acid (FeA) in aqueous sucrose solutions containing the mixture of these hydroxycinnamic acids (HCAs) were studied by the Fenton oxidation process. Central composite design and multiresponse surface methodology were used to evaluate and optimize the interactive effects of process parameters. Four quadratic polynomial models were developed for the degradation of each in idual acid in the mixture and the total HCAs degraded. Sucrose was the most influential parameter that significantly affected the total amount of HCA degraded. Under the conditions studied there was a <0.01% loss of sucrose in all reactions. The optimal values of the process parameters for a 200 mg/L HCA mixture in water (pH 4.73, 25.15 °C) and sucrose solution (13 mass %, pH 5.39, 35.98 °C) were 77% and 57%, respectively. Regression analysis showed goodness of fit between the experimental results and the predicted values. The degradation behavior of CaA differed from those of pCoA and FeA, where further CaA degradation is observed at increasing sucrose and decreasing solution pH. The differences (established using UV/vis and ATR-FTIR spectroscopy) were because, unlike the other acids, CaA formed a complex with Fe(III) or with Fe(III) hydrogen-bonded to sucrose and coprecipitated with lepidocrocite, an iron oxyhydroxide.
Lignocellulosics as a Renewable Feedstock for Chemical Industry: Chemical Hydrolysis and Pretreatment Processes
Publisher: Wiley
Date: 12-12-2012
Conversion of sugarcane carbohydrates into platform chemicals
Publisher: Wiley
Date: 28-03-2016
Multistimulus-Responsive Graphene Oxide/Fe3O4/Starch Soft Actuators
Publisher: American Chemical Society (ACS)
Date: 04-2022
Abstract: Soft actuators that respond to external stimuli like moisture, magnetism, light, and temperature have received tremendous attention owing to their promising potential in many frontier applications, including smart switches, soft robots, sensors, and artificial muscles. However, most of the conventional actuators can only be triggered by a solo stimulus and demand advanced manufacturing techniques that utilize expensive, hazardous, and synthetic raw materials. Herein, we design and fabricate a multiple stimuli-responsive actuator using graphene oxide, Fe
Preparation of bioinspired graphene oxide/PMMA nanocomposite with improved mechanical properties
Publisher: Elsevier BV
Date: 11-2021
Saccharification of acid–alkali pretreated sugarcane bagasse using immobilized enzymes from Phomopsis stipata
Publisher: Springer Science and Business Media LLC
Date: 2022
Production of fermentable sugars from sugarcane bagasse
Publisher: Wiley
Date: 28-03-2016
Challenges and Opportunities in Identifying and Characterising Keratinases for Value-Added Peptide Production
Publisher: MDPI AG
Date: 03-02-2020
Abstract: Keratins are important structural proteins produced by mammals, birds and reptiles. Keratins usually act as a protective barrier or a mechanical support. Millions of tonnes of keratin wastes and low value co-products are generated every year in the poultry, meat processing, leather and wool industries. Keratinases are proteases able to breakdown keratin providing a unique opportunity of hydrolysing keratin materials like mammalian hair, wool and feathers under mild conditions. These mild conditions ameliorate the problem of unwanted amino acid modification that usually occurs with thermochemical alternatives. Keratinase hydrolysis addresses the waste problem by producing valuable peptide mixes. Identifying keratinases is an inherent problem associated with the search for new enzymes due to the challenge of predicting protease substrate specificity. Here, we present a comprehensive review of twenty sequenced peptidases with keratinolytic activity from the serine protease and metalloprotease families. The review compares their biochemical activities and highlights the difficulties associated with the interpretation of these data. Potential applications of keratinases and keratin hydrolysates generated with these enzymes are also discussed. The review concludes with a critical discussion of the need for standardized assays and increased number of sequenced keratinases, which would allow a meaningful comparison of the biochemical traits, phylogeny and keratinase sequences. This deeper understanding would facilitate the search of the vast peptidase family sequence space for novel keratinases with industrial potential.
Erratum to: Assessing dilute acid pretreatment of different lignocellulosic biomasses for enhanced sugar production (Cellulose, (2016), 23, 6, (3771-3783), 10.1007/s10570-016-1043-6)
Publisher: Springer Science and Business Media LLC
Date: 12-06-2017
Fuels and Chemicals from Lignocellulosic Biomass
Publisher: Wiley
Date: 26-08-2013
Molecularly Engineered Lignin-Derived Additives Enable Fire-Retardant, UV-Shielding, and Mechanically Strong Polylactide Biocomposites
Publisher: American Chemical Society (ACS)
Date: 04-02-2021
Tailored production of lignin-containing cellulose nanofibrils from sugarcane bagasse pretreated by acid-catalyzed alcohol solutions
Publisher: Elsevier BV
Date: 09-2022
Pretreatment of sugarcane bagasse by acid-catalysed process in aqueous ionic liquid solutions
Publisher: Elsevier BV
Date: 09-2012
DOI: 10.1016/J.BIORTECH.2012.06.035
Abstract: A biomass pretreatment process was developed using acidified ionic liquid (IL) solutions containing 10-30% water. Pretreatment of sugarcane bagasse at 130°C for 30 min by aqueous 1-butyl-3-methylimidazolium chloride (BMIMCl) solution containing 1.2% HCl resulted in a glucan digestibility of 94-100% after 72 h of enzymatic hydrolysis. HCl was found to be a more effective catalyst than H(2)SO(4) or FeCl(3). Increasing acid concentration (from 0.4% to 1.2%) and reaction temperature (from 90 to 130°C) increased glucan digestibility. The glucan digestibility of solid residue obtained with the acidified BMIMCl solution that was re-used for three times was >97%. The addition of water to ILs for pretreatment could significantly reduce IL solvent costs and allow for increased biomass loadings, making the pretreatment by ILs a more economic proposition.
Highly efficient microbial lipid synthesis from co-fermentation of enzymatic hydrolysate of sugarcane bagasse by a Trichosporon dermatis mutant
Publisher: Elsevier BV
Date: 11-2021
Effects of lignocellulosic biomass type on nutrient recovery and heavy metal removal from digested sludge by hydrothermal treatment
Publisher: Elsevier BV
Date: 09-2022
DOI: 10.1016/J.JENVMAN.2022.115524
Abstract: Sludge is a nutrient-rich organic waste generated from wastewater treatment plants. However, the application of sludge as a nutrient source is limited by its high contents of water and pollutants. In this study, the effects of biomass type on nutrient recovery and heavy metal removal from digested sludge by hydrothermal treatment (HTT) were investigated. Blending biomass with digested sludge for HTT at 180-240 °C increased the recovery of nitrogen in the treated solids. At the HTT temperature of 240 °C, HTT with hardwood sawdust led to the highest nitrogen recovery of 70.6%, compared to the lowest nitrogen recovery of 36.5% without biomass. Blending biomass slightly decreased the recovery of phosphorus compared to those without biomass. Nevertheless, the lowest phosphorus recovery of 91.3% with the use of hardwood sawdust at the HTT temperature of 240 °C was only ∼7.0% less than that without biomass. Blending biomass reduced the contents of macro-metals such as Ca, Fe, Mg and Al in treated solids but the metal contents varied with different biomasses. Regarding the heavy metals, the use of rice husk did not decrease the contents of Ni and Co while blending bagasse did not decrease the content of Cr at HTT temperatures of 210 °C and 240 °C compared to the use of other biomasses. The different effects of biomass type on nutrient recovery and heavy metals were likely related to the types and abundances of organic acids such as acetic acid, oxygen-containing functional groups such as C-OH and COOH, oxide minerals such as silica from biomasses and the overall effects of these factors. This study provides very useful information in selection of lignocellulosic biomass for HTT of sludge for nutrient recovery and heavy metal removal.
Improved microbial oil production from oil palm empty fruit bunch by Mucor plumbeus
Publisher: Elsevier BV
Date: 04-2017
The outlook of the production of advanced fuels and chemicals from integrated oil palm biomass biorefinery
Publisher: Elsevier BV
Date: 07-2019
Glycerol-assisted one-step instant catapult steam explosion enhances enzymatic digestibility of corn stover
Publisher: Elsevier BV
Date: 12-2020
Effects of hydrochar derived from hydrothermal treatment of sludge and lignocellulose mixtures on soil properties, nitrogen transformation, and greenhouse gases emissions
Publisher: Elsevier BV
Date: 11-2022
DOI: 10.1016/J.CHEMOSPHERE.2022.135792
Abstract: In this study, hydrochar s les derived from hydrothermal treatment (HTT) of sludge and sludge-biomass mixtures were applied to a sandy soil and their effects on soil properties, soil nutrients, greenhouse gas (GHG) emissions, and soluble heavy metals were investigated. The application of untreated sludge and hydrochar derived from HTT of sludge at 180 °C led to the highest soluble nitrate, CO
Evaluation of oil production from oil palm empty fruit bunch by oleaginous micro‐organisms
Publisher: Wiley
Date: 24-03-2016
DOI: 10.1002/BBB.1645
Co- and Ca-phosphate-based catalysts for the depolymerization of organosolv eucalyptus lignin
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5RA04286K
Abstract: Depolymerization of purified organosolv eucalyptus wood lignin by heterogeneous catalyst – calcium phosphate (β-CaP 2 O 6 ) in methanol–water solvent at 300 °C resulted in a total syringol yield of 16.7%.
Environmental and economic life cycle assessment of energy recovery from sewage sludge through different anaerobic digestion pathways
Publisher: Elsevier BV
Date: 05-2017
Effects of glycerol on enzymatic hydrolysis and ethanol production using sugarcane bagasse pretreated by acidified glycerol solution
Publisher: Elsevier BV
Date: 09-2015
DOI: 10.1016/J.BIORTECH.2015.05.093
Abstract: In this study, for the first time the effects of glycerol on enzymatic hydrolysis and ethanol fermentation were investigated. Enzymatic hydrolysis was inhibited slightly with 2.0 wt% glycerol, leading to reduction in glucan digestibility from 84.9% without glycerol to 82.9% (72 h). With 5.0 wt% and 10.0 wt% glycerol, glucan digestibility was reduced by 4.5% and 11.0%, respectively. However, glycerol did not irreversibly inhibit cellulase enzymes. Ethanol fermentation was not affected by glycerol up to 5.0 wt%, but was inhibited slightly at 10.0 wt% glycerol, resulting in reduction in ethanol yield from 86.0% in the absence of glycerol to 83.7% (20 h). Based on the results of laboratory and pilot-scale experiments, it was estimated that 0.142 kg ethanol can be produced from 1.0 kg dry bagasse (a glucan content of 38.0%) after pretreatment with acidified glycerol solution.
Pretreatment of sugarcane bagasse by acidified aqueous polyol solutions
Publisher: Springer Science and Business Media LLC
Date: 11-10-2013
Sustainable production of furan-based oxygenated fuel additives from pentose-rich biomass residues
Publisher: Elsevier BV
Date: 05-2022
Effect of hydrothermal treatment on deep dewatering of digested sludge: Further understanding the role of lignocellulosic biomass
Publisher: Elsevier BV
Date: 03-2022
DOI: 10.1016/J.SCITOTENV.2021.152294
Abstract: In this study, lignocellulose-assisted hydrothermal treatment (HTT) of digestated sludge was studied to further understand the role of biomass in HTT and its effect on subsequent sludge dewatering. HTT of sludge-biomass mixtures at 180 °C for 60 min at a sludge/biomass total solids (TS) ratio of 1:1 led to solid residue moistures of 36%-40% after dewatering using a hydraulic press at 24 MPa, compared to 69.5% without biomass. Further investigation showed that organic acids, especially acetic acid generated from lignocellulosic biomass hydrolysed extracellular polymeric substances (EPS), especially EPS-protein, and improved sludge dewaterability. The role of organic acids was further verified with the addition of 10.0 g/L acetic acid for HTT of sludge at 180 °C in the absence of biomass. It was also observed that in HTT of sludge with 10.0 g/L acetic acid, protein nitrogen was converted to more stable forms of nitrogen such as pyrrole‑nitrogen and quaternary‑nitrogen. However, HTT with acetic acid alone resulted in dewatered solids with high ash contents, which may limit their applications as soil amendments. Combination of biomass and acetic acid with a sludge/biomass TS ratio of 3:1 and acetic acid loading of 10.0 g/L at a HTT temperature of 180 °C for 60 min led to solid moistures of 50.5% with hardwood sawdust and 57.7% with sugarcane bagasse after dewatering at 3 MPa, corresponding to total weight reductions of 66.3% and 55.7%, respectively. In contrast, HTT of sludge at 180 °C for 60 min without acetic acid and biomass resulted in a solid moisture of 76.6% after dewatering at 3 MPa and a corresponding weight reduction of 49.5%. With the use of biomass and acetic acid in HTT, the treated and dewatered solids also had increased carbon content and reduced ash content. These dewatered solids may be used as potential soil amendments though the properties related to soil applications need to be considered in future studies.
Anthocyanins characterization and antioxidant activities of sugarcane (Saccharum officinarum L.) rind extracts
Publisher: Elsevier BV
Date: 03-2018
Enhancement of l(+)-lactic acid production using acid-adapted precultures of Rhizopus arrhizus in a bubble column reactor
Publisher: Elsevier BV
Date: 10-2009
DOI: 10.1016/J.JBIOSC.2009.04.009
Abstract: 88 g/L lactic acid was produced from waste potato starch (equivalent to 100 g/L glucose) in a bubble column reactor using appropriate acid-adapted precultures of Rhizopus arrhizus. Further experiment showed that repeated dilution of cultures caused the decrease of lactic acid concentration and productivity due to formation of large fungal pellets.
Exogenous Probiotics Improve Fermentation Quality, Microflora Phenotypes, and Trophic Modes of Fermented Vegetable Waste for Animal Feed
Publisher: MDPI AG
Date: 19-03-2021
DOI: 10.3390/MICROORGANISMS9030644
Abstract: The fermentation of leaf vegetable waste to produce animal feed reduces the environmental impact of vegetable production and transforms leaf vegetable waste into a commodity. We investigated the effect of exogenous probiotics and lignocellulose enzymes on the quality and microbial community of fermented feed (FF) produced from cabbage waste. The addition of exogenous probiotics resulted in increased crude protein (CP) content (p 0.05), better odor (moderate organic acid and ethanol, with low ammonia-N, p 0.05), and a lower relative abundance (RA) of pathogens (below 0.4%, p 0.05) in FF, compared to without. With the addition of exogenous probiotics, only Pediococcus and Saccharomyces were enriched and symbiotic in FF these were the keystone taxa to reduce the abundance of aerobic, form-biofilms, and pathogenic microorganisms, resulting in an efficient anaerobic fermentation system characterized by facultative anaerobic and Gram-positive bacterial communities, and undefined saprotroph fungal communities. Thus, inoculation of vegetable waste fermentation with exogenous probiotics is a promising strategy to enhance the biotransformation of vegetable waste into animal feed.
Co-utilization of acidified glycerol pretreated-sugarcane bagasse for microbial oil production by a novel Rhodosporidium strain
Publisher: Wiley
Date: 04-02-2019
Sustainable conversion of cellulosic biomass to chemicals under visible-light irradiation
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5RA16616K
Abstract: Plasmonic nanostructure: a high conversion ( %) of crystalline cellulose to chemicals was achieved with enhanced electromagnetic fields, E / E 0 = 10 3 to 10 6 times.
Organosolv pretreatment of plant biomass for enhanced enzymatic saccharification
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5GC02034D
Abstract: Pretreatments of lignocellulosic biomass for enhanced enzymatic saccharification with different types of organic solvents are compared and reviewed.
Mild organosolv pretreatment of sugarcane bagasse with acetone/phenoxyethanol/water for enhanced sugar production
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2GC04404H
Abstract: APW pretreatment of SCB for enhanced sugar production and correlation analysis of pretreated SCB and EHE.
Production of L(+)-lactic acid using acid-adapted precultures of Rhizopus arrhizus in a stirred tank reactor
Publisher: Springer Science and Business Media LLC
Date: 25-01-2008
DOI: 10.1007/S12010-007-8126-7
Abstract: Cultivations of filamentous fungi in stirred tank reactors (STRs) to produce metabolites are often limited by insufficient mixing and mass transfer because of the formation of mycelial clumps inside the reactors. This study developed an acid-adapted preculture approach to control the morphology of filamentous Rhizopus arrhizus in a STR, consequently to enhance the production yield and productivity of L(+)-lactic acid efficiently using waste potato starch as substrate. Using the acid-adapted precultures as inoculum, the morphology of R. arrhizus was maintained as large clumps, coalesced loose small pellets, and freely dispersed small pellets. The highest lactic acid concentration of 85.7 g/L with a yield of 86% was obtained in association with the formation of coalesced loose small pellets. The results indicate that the use of the acid-adapted precultures as inoculum is a promising approach for lactic acid production in STRs.
Multifunctional, Bioinspired, and Moisture Responsive Graphene Oxide/Tapioca Starch Nanocomposites
Publisher: Wiley
Date: 10-07-2022
Abstract: Actuators triggered by water evaporation have found potential applications in a wide range of emerging fields, including smart structures, power generators, artificial muscles, and soft robots. In addition to poor mechanical performance, conventional actuators raise major economic and environmental concerns due to their expensive and complex synthesis processes with hazardous chemicals and high ecological footprint. Herein, a nacre‐inspired moisture‐responsive actuator is fabricated using graphene oxide (GO) and tapioca starch (TS), a water‐soluble, low‐cost, and eco‐friendly natural polymer. The resultant TS/GO nanocomposite film has excellent mechanical properties and exhibits rapid and autonomous locomotion under moisture attack. Moreover, the actuator demonstrates a bending speed of ≈60° s −1 and has the potential to lift a load up to ten times its own weight. Based on these features, a novel moisture detection alarm system with control and operating circuits is assembled using the TS/GO film. Furthermore, the TS/GO actuator shows that it is capable of mimicking biological structures like flowers and can undergo locomotion even for nonwater vapors like isopropyl alcohol, ethanol, and chloroform.
Congo Red adsorption by ball-milled sugarcane bagasse
Publisher: Elsevier BV
Date: 12-2011
Acid-Catalyzed Glycerol Pretreatment of Sugarcane Bagasse: Understanding the Properties of Lignin and Its Effects on Enzymatic Hydrolysis
Publisher: American Chemical Society (ACS)
Date: 07-2020
Sugar and value-added products derived from retentate concentrate of sugarcane juice
Publisher: Elsevier BV
Date: 2021
Enzymatic acylation of cyanidin-3-glucoside with fatty acid methyl esters improves stability and antioxidant activity
Publisher: Elsevier BV
Date: 05-2021
Reaction characteristics of metal-salt coordinated deep eutectic solvents during lignocellulosic pretreatment
Publisher: Elsevier BV
Date: 04-2023
Microbial oil production from acidified glycerol pretreated sugarcane bagasse by Mortierella isabellina
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8RA08971J
Abstract: A microbial oil production process consisting of acidified glycerol pretreatment of sugarcane bagasse, enzymatic hydrolysis, microbial oil production by M. isabellina NRRL 1757 and oil recovery by hydrothermal liquefaction of fungal biomass in fermentation broth was assessed.
Efficient production of fructo-oligosaccharides from sucrose and molasses by a novel Aureobasidium pullulan strain
Publisher: Elsevier BV
Date: 11-2020
Enhanced Antioxidant and Antiproliferative Activities of Cymbopogon citratus (DC.) Stapf Essential Oils in Microemulsion
Publisher: American Chemical Society (ACS)
Date: 15-08-2019
Instant Catapult Steam Explosion: A rapid technique for detoxification of aflatoxin-contaminated biomass for sustainable utilization as animal feed
Publisher: Elsevier BV
Date: 05-2020
Temperature-regulated formation of hierarchical pores and defective sites in MIL-121 for enhanced adsorption of cationic and anionic dyes
Publisher: Elsevier BV
Date: 06-2023
Mild fractionation of sugarcane bagasse into fermentable sugars and β-O-4 linkage-rich lignin based on acid-catalysed crude glycerol pretreatment
Publisher: Elsevier BV
Date: 12-2020
Effects of mesostructured silica catalysts on the depolymerization of organosolv lignin fractionated from woody eucalyptus
Publisher: Elsevier BV
Date: 03-2015
DOI: 10.1016/J.BIORTECH.2014.12.098
Abstract: Isolated and purified organosolv eucalyptus wood lignin was depolymerized at different temperatures with and without mesostructured silica catalysts (i.e., SBA-15, MCM-41, ZrO2-SBA-15 and ZrO2-MCM-41). It was found that at 300°C for 1h with a solid/liquid ratio of 0.0175/1 (w/v), the SBA-15 catalyst with high acidity gave the highest syringol yield of 23.0% in a methanol/water mixture (50/50, wt/wt). Doping with ZrO2 over these catalysts did not increase syringol yield, but increased the total amount of solid residue. Gas chromatography-mass spectrometry (GC-MS) also identified other main phenolic compounds such as 1-(4-hydroxy-3,5-dimethoxyphenyl)-ethanone, 1,2-benzenediol, and 4-hydroxy-3,5-dimethoxy-benzaldehyde. Analysis of the lignin residues with Fourier transform-infrared spectroscopy (FT-IR) indicated decreases in the absorption bands intensities of OH group, CO stretching of syringyl ring and aromatic CH deformation of syringol unit, and an increase in band intensities associated with the guaiacyl ring, confirming the type of products formed.
Understanding flocculation properties of soil impurities present in the factory sugarcane supply
Publisher: Elsevier BV
Date: 11-2016
High Density Cultivation ofPanax notoginseng Cell Cultures with Methyl Jasmonate Elicitation in a Centrifugal Impeller Bioreactor
Publisher: Wiley
Date: 10-2005
Formation, characteristics, and applications of environmentally persistent free radicals in biochars: A review
Publisher: Elsevier BV
Date: 06-2019
DOI: 10.1016/J.BIORTECH.2019.02.105
Abstract: Due to abundant biomass and eco-friendliness, biochar is exemplified as one of the most promising candidates to mediate the degradation of environmental contaminants. Recently, environmentally persistent free radicals (EPFRs) have been detected in biochars, which can activate S
Fractionation of light-colored lignin via lignin-first strategy and enhancement of cellulose saccharification towards biomass valorization
Publisher: Elsevier BV
Date: 10-2022
Reassessment of the Role of CaCO3 in n-Butanol Production from Pretreated Lignocellulosic Biomass by Clostridium acetobutylicum
Publisher: Springer Science and Business Media LLC
Date: 21-10-2020
DOI: 10.1038/S41598-020-74899-9
Abstract: In this study, the role of CaCO 3 in n-butanol production was further investigated using corn straw hydrolysate (CSH) media by Clostridium acetobutylicum CICC 8016. CaCO 3 addition stimulated sugars utilization and butanol production. Further study showed that calcium salts addition to CSH media led to the increase in Ca 2+ concentration both intracellularly and extracellularly. Interestingly, without calcium salts addition, intracellular Ca 2+ concentration in the synthetic P2 medium was much higher than that in the CSH medium despite the lower extracellular Ca 2+ concentrations in the P2 medium. These results indicated that without additional calcium salts, Ca 2+ uptake by C. acetobutylicum CICC 8016 in the CSH medium may be inhibited by non-sugar biomass degradation compounds, such as furans, phenolics and organic acids. Comparative proteomics analysis results showed that most enzymes involved in glycolysis, redox balance and amino acids metabolism were up-regulated with CaCO 3 addition. This study provides further insights into the role of CaCO 3 in n-butanol production using real biomass hydrolysate.
Highly efficient production of transfructosylating enzymes using low-cost sugarcane molasses by A. pullulans FRR 5284
Publisher: Springer Science and Business Media LLC
Date: 11-06-2021
DOI: 10.1186/S40643-021-00399-X
Abstract: Fructooligosaccharides (FOS) are a type of important prebiotics and produced by transfructosylating enzymes. In this study, sugarcane molasses was used as the substrate for production of transfructosylating enzymes by Aureobasidium pullulans FRR 5284. NaNO 3 was a superior nitrogen source to yeast extract for production of transfructosylating enzymes by A. pullulans FRR 5284 and decreasing the ratio of NaNO 3 to yeast extract nitrogen from 1:0 to 1:1 resulted in the reduction of the total transfructosylating activity from 109.8 U/mL to 82.5 U/mL. The addition of only 4.4 g/L NaNO 3 into molasses-based medium containing 100 g/L mono- and di-saccharides resulted in total transfructosylating activity of 123.8 U/mL. Scale-up of the A. pullulans FRR 5284 transfructosylating enzyme production process from shake flasks to 1 L bioreactors improved the enzyme activity and productivity to 171.7 U/mL and 3.58 U/mL/h, 39% and 108% higher than those achieved from shake flasks, respectively. Sucrose (500 g/L) was used as a substrate for extracellular, intracellular, and total A. pullulans FRR 5284 transfructosylating enzymes, with a maximum yield of 61%. Intracellular, extracellular, and total A. pullulans FRR 5284 transfructosylating enzymes from different production systems resulted in different FOS profiles, indicating that FOS profiles can be controlled by adjusting intracellular and extracellular enzyme ratios and, hence prebiotic activity.
Laboratory and pilot scale pretreatment of sugarcane bagasse by acidified aqueous glycerol solutions
Publisher: Elsevier BV
Date: 06-2013
DOI: 10.1016/J.BIORTECH.2013.03.065
Abstract: Pretreatment of sugarcane bagasse with acidified aqueous glycerol solution was evaluated at both laboratory and pilot scales. Laboratory scale pretreatment (4.00 g dry mass in 40.00 g liquid) with glycerol solutions containing ≤ 20 wt.% water and 1.2 wt.% HCl at 130°C for 60 min resulted in biomass having glucan digestibilities of ≥ 88%. Comparable glucan enzymatic digestibility of 90% was achieved with bagasse pretreated at pilot scale (10 kg dry mass in 60 kg liquid) using a glycerol solution containing 0.4 wt.% HCl and 17 wt.% water at 130°C for 15 min. We attribute more efficient pretreatment at pilot scale (despite shorter reaction time and reduced acid content) to improved mixing and heat transfer in a horizontal reactor. Pretreatment of sugarcane bagasse with acid-catalysed glycerol solutions likely produces glycerol-glycosides, which together with hydrolysed lignin are potential substrates for the production of biopolymers.
Enhancement of ginsenoside biosynthesis in high-density cultivation of Panax notoginseng cells by various strategies of methyl jasmonate elicitation
Publisher: Springer Science and Business Media LLC
Date: 04-01-2005
DOI: 10.1007/S00253-004-1831-Z
Abstract: A single addition of 200 microM methyl jasmonate (MJA) to high-density cell cultures of Panax notoginseng enhanced ginsenoside production in both shake-flask (250 ml) and airlift bioreactor (ALR 1 l working volume). Repeated elicitation with two additions of 200 microM MJA during cultivation further induced the ginsenoside biosynthesis in both cultivation vessels. The content of ginsenosides Rg1, Re, Rb1 and Rd in the ALR was increased from, respectively, 0.18+/-0.01, 0.21+/-0.01, 0.21+/-0.02 and 0 mg per100 mg dry cell weight (DW) in untreated cell cultures (control) to 0.32+/-0.02, 0.36+/-0.02, 0.72+/-0.06 and 0.08+/-0.01 mg per100 mg DW with a single addition of MJA and further increased to 0.43+/-0.02, 0.46+/-0.03, 1.09+/-0.07 and 0.14+/-0.02 mg per100 mg DW with two additions of MJA. Interestingly, the activity of the Rb1 biosynthetic enzyme (UDPG-ginsenoside Rd glucosyltransferase), was also increased with a single elicitation by MJA and increased again by a repeated elicitation, which coincided well with the trend in the increase in Rb(1) content. In order to further improve the cell density and ginsenoside production, a strategy of MJA repeated elicitation combined with sucrose feeding was adopted. The final cell density and total ginsenoside content in the ALR reached 27.3+/-1.5 g/l and 2.02+/-0.06 mg per100 mg DW and the maximum production of ginsenoside Rg1, Re, Rb1 and Rd was 111.8+/-4.7, 117.2+/-4.6, 290.2+/-5.1 and 32.7+/-8.1 mg/l, respectively. The strategies demonstrated and the information obtained in this work are useful for the efficient large-scale production of bioactive ginsenosides by plant cell cultures.
UV-Shielding Performance and Color of Lignin and its Application to Sunscreen
Publisher: Wiley
Date: 27-11-2022
Abstract: The balance between sunscreen performance and color is a main obstacle in the preparation of high‐quality lignin‐based sunscreens. In this study, five lignin s les (i.e., NaOH–L, EG–L, G–L, 1,3‐PDO–L, and 1,4‐BDO–L) are extracted from sugarcane bagasse by using five different solvent systems. The lignin extracted by organic solvents clearly shows light color and excellent UV‐shielding performance, and the 1,3‐PDO–L s le reveals the lowest total color difference ( ΔE is 30.4) and highest sun protection factor (SPF 3.99) among the s les obtained. The SPF of commercial facial creams significantly increases after addition of 5 wt% lignin s les, and the colors of these creams are lighter than that of 10 wt% lignin‐modified cream s les. Moreover, the lignin‐modified creams exhibit excellent broad‐spectrum UV absorbency. The synergistic effects of lignin and the active substances of commercial sunscreen dramatically enhance the UV shielding effect of the commercial sunscreen. The aging test confirms that the lignin‐based sunscreens have good photostability. This study provides a reliable reference for the development of lignin‐based sunscreens and high‐value utilization of lignin.
Biorefining of sugarcane bagasse to fermentable sugars and surface oxygen group-rich hierarchical porous carbon for supercapacitors
Publisher: Elsevier BV
Date: 12-2020
Pilot-scale cellulosic ethanol production using eucalyptus biomass pre-treated by dilute acid and steam explosion
Publisher: Wiley
Date: 29-04-2016
DOI: 10.1002/BBB.1651
Glycerol carbonate as green solvent for pretreatment of sugarcane bagasse
Publisher: Springer Science and Business Media LLC
Date: 2013
Effects of pH on pretreatment of sugarcane bagasse using aqueous imidazolium ionic liquids
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C2GC36084E
Valorization of native sugarcane bagasse lignin to bio-aromatic esters/monomers: Via a one pot oxidation-hydrogenation process
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8GC03655A
Abstract: An oxidation–hydrogenation process using atmospheric O 2 has been developed to convert native bagasse lignin into bio-aromatic esters in a single step.
Bacillus subtilis biofertilizer mitigating agricultural ammonia emission and shifting soil nitrogen cycling microbiomes
Publisher: Elsevier BV
Date: 11-2020
Scale-up of centrifugal impeller bioreactor for hyperproduction of ginseng saponin and polysaccharide by high-density cultivation of Panax notoginseng cells
Publisher: Wiley
Date: 06-08-2004
DOI: 10.1021/BP0499451
Abstract: Scale-up of a novel centrifugal impeller bioreactor (CIB) was demonstrated for production of valuable plant-specific secondary metabolites by high-density cell cultures. Initial kLa was identified to be a key factor affecting cell growth and production of ginseng saponin and polysaccharide by high-density cultivation of Panax notoginseng cells in a 3-L CIB. A high level of ginseng saponin and polysaccharide production was obtained at an initial kLa value of 30.2 h(-1). A maximum dry cell weight (DW) and production titer of ginseng saponin and polysaccharide reached 22.0 +/- 0.3, 1.5 +/- 0.1, and 2.7 +/- 0.2 g/L on day 15 with their corresponding productivity of 1140 +/- 42, 81 +/- 8, and 150 +/- 17 mg/(L.d), respectively. Based on initial kLa level, the CIB high-cell-density cultivation process was successfully scaled up from 3 L to 30 L. A maximum DW and production titer of ginseng saponin and polysaccharide in a 30-L CIB reached 25.5 +/- 0.5, 1.7 +/- 0.1, and 2.9 +/- 0.1 g/L (on day 15) at an initial kLa value of 28.7 h(-1), respectively, and their corresponding productivity was 1340 +/- 56, 91 +/- 9, and 164 +/- 15 mg/(L.d). Furthermore, by adopting a fed-batch cultivation strategy, a maximum DW and concentrations of total saponin and polysaccharide in the 30-L CIB were enhanced to 30.3 +/- 1.0, 2.1 +/- 0.1, and 3.5 +/- 0.2 g/L with their corresponding productivity of 1467 +/- 87, 102 +/- 13, and 179 +/- 18 mg/(L.d), respectively. The work suggests that the CIB may have great potential in large-scale high-density plant cell cultures for efficient production of useful secondary metabolites.
Intercalated-Laurate-Enhanced Photocatalytic Activities of Ni/Cr-Layered Double Hydroxides
Publisher: MDPI AG
Date: 04-04-2023
Abstract: Laurate (LA−)-intercalated nickel–chromium-layered double hydroxides (LDHs) were synthesized using the co-precipitation method and investigated as a potential photocatalyst for methylene orange (MO) degradation. For comparison, a series of LDHs with various molar ratios of Ni2+(or Mg2+)/Cr3+(or Fe3+)/LA−(or CO32−) were prepared. X−ray diffraction (XRD) and element analysis showed that Ni/Cr(2/1)−1.0 LA LDH had the most ordered crystal structure, and showed the same photocatalytic decolorization performance as Mg/Cr(2/1)−1.0LA LDH towards MO, which was significantly superior to Ni/Cr−CO3 LDH, Ni/Fe(2/1)−1.0LA LDH, and Ni/Cr−CO3 LDH with LA−, and Cr3+ with LA−. The photocatalytic removal rate of MO with the initial concentration of 100 mg/L by Ni/Cr(2/1)−1.0LA LDH (0.5 g/L) could be up to 80% with UV light irradiation for 3 h, which was almost twice higher than that of the sorption test. The photocatalytic reaction was in accordance with the pseudo-first-order kinetics, which implied that the catalytic process took place on the surface of the catalyst. All the results indicate the photodegradation of MO by Ni/Cr−LA LDHs was enhanced by the sorption of MO onto the intercalated LA− in the interlayer. The free radical capture experiments suggest that the main role of the photocatalytic mechanism of Ni/Cr−LA LDHs could be the •O2− with high oxidation activity produced by the electron-hole pairs of LDH, as excited by UV light. Additionally, the •O2− further reacted with the adjacent MO molecule pre-sorbed on the intercalated LA.
Structural Changes of Sugar Cane Bagasse Lignin during Cellulosic Ethanol Production Process
Publisher: American Chemical Society (ACS)
Date: 19-09-2016
Valorisation of keratin waste: Controlled pretreatment enhances enzymatic production of antioxidant peptides
Publisher: Elsevier BV
Date: 2022
Dispersion Methodology for Technical Lignin into Polyester Polyol for High-Performance Polyurethane Insulation Foam
Publisher: American Chemical Society (ACS)
Date: 08-06-2021
Effects of an alkali-acid purification process on the characteristics of eucalyptus lignin fractionated from a MIBK-based organosolv process
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA20081H
Abstract: In this study, the effects of an alkali-acid purification process on the properties of eucalyptus lignin isolated from a methyl isobutyl ketone (MIBK)/methanol/water-based organosolv fractionation process were evaluated.
Simultaneous Saccharification and Fermentation of Pretreated Eucalyptus grandis under High Solids Loading
Publisher: Mary Ann Liebert Inc
Date: 06-2017
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